/*
 * Copyright (c) 2006, 2012, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
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 *
 *
 *
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 *
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 *
 *
 *
 *
 *
 *
 *
 */

package javax.tools;

import javax.tools.JavaFileManager.Location;

import java.util.concurrent.*;

/**
 * Standard locations of file objects.
 *
 * @author Peter von der Ah&eacute;
 * @since 1.6
 */
public enum StandardLocation implements Location {

  /**
   * Location of new class files.
   */
  CLASS_OUTPUT,

  /**
   * Location of new source files.
   */
  SOURCE_OUTPUT,

  /**
   * Location to search for user class files.
   */
  CLASS_PATH,

  /**
   * Location to search for existing source files.
   */
  SOURCE_PATH,

  /**
   * Location to search for annotation processors.
   */
  ANNOTATION_PROCESSOR_PATH,

  /**
   * Location to search for platform classes.  Sometimes called
   * the boot class path.
   */
  PLATFORM_CLASS_PATH,

  /**
   * Location of new native header files.
   *
   * @since 1.8
   */
  NATIVE_HEADER_OUTPUT;

  /**
   * Gets a location object with the given name.  The following
   * property must hold: {@code locationFor(x) ==
   * locationFor(y)} if and only if {@code x.equals(y)}.
   * The returned location will be an output location if and only if
   * name ends with {@code "_OUTPUT"}.
   *
   * @param name a name
   * @return a location
   */
  public static Location locationFor(final String name) {
    if (locations.isEmpty()) {
      // can't use valueOf which throws IllegalArgumentException
      for (Location location : values()) {
        locations.putIfAbsent(location.getName(), location);
      }
    }
    locations.putIfAbsent(name.toString(/* null-check */), new Location() {
      public String getName() {
        return name;
      }

      public boolean isOutputLocation() {
        return name.endsWith("_OUTPUT");
      }
    });
    return locations.get(name);
  }

  //where
  private static final ConcurrentMap<String, Location> locations
      = new ConcurrentHashMap<String, Location>();

  public String getName() {
    return name();
  }

  public boolean isOutputLocation() {
    switch (this) {
      case CLASS_OUTPUT:
      case SOURCE_OUTPUT:
      case NATIVE_HEADER_OUTPUT:
        return true;
      default:
        return false;
    }
  }
}
